阅读说明：本技术 一种低温连续提取浓缩生产机组装置及方法 (Low-temperature continuous extraction and concentration production unit device and method ) 是由 李志贤 于 2019-10-14 设计创作，主要内容包括：本发明涉及一种低温连续提取浓缩生产机组装置,包括两组负压与常压转换设置的浸润罐、中转罐和双效浓缩器,所述浸润罐的顶部二次蒸汽输出端与冷凝器的二次蒸汽输入端相连通,所述冷凝器的输出端连通油水分离器,油水分离器回流端连接浸润罐顶部；所述浸润罐的顶部真空输出端连通有真空泵,浸润罐的底部设置有喂料器,喂料器的底部与提取装置进料口相连；提取装置的出液口与中转罐相连接；所述中转罐的输出端通过导管与双效浓缩器的进液端相连通；所述双效浓缩器的溶媒回流端与负压回流泵相连,所述负压回流泵的输出端分别与溶媒罐的进液管口和所述提取装置的溶媒进料口相连。本发明结构设计合理,连续生产可大大提高生产产能及效率。(The invention relates to a low-temperature continuous extraction and concentration production unit device which comprises two groups of infiltration tanks, a transfer tank and a double-effect concentrator, wherein the infiltration tanks are arranged by converting negative pressure and normal pressure, the secondary steam output end at the top of each infiltration tank is communicated with the secondary steam input end of a condenser, the output end of the condenser is communicated with an oil-water separator, and the return end of the oil-water separator is connected with the top of each infiltration tank; the vacuum output end at the top of the infiltration tank is communicated with a vacuum pump, the bottom of the infiltration tank is provided with a feeder, and the bottom of the feeder is connected with the feed inlet of the extraction device; the liquid outlet of the extraction device is connected with the transfer tank; the output end of the transfer tank is communicated with the liquid inlet end of the double-effect concentrator through a guide pipe; solvent reflux end and the negative pressure backwash pump of double-effect concentrator link to each other, the output of negative pressure backwash pump respectively with the feed liquor mouth of pipe of solvent jar with extraction element's solvent feed inlet links to each other. The invention has reasonable structural design, and can greatly improve the production capacity and efficiency by continuous production.)

1. The utility model provides a low temperature draws concentrated production unit device in succession, includes extraction element, menstruum jar, two sets of negative pressures and infiltration jar, condenser, oil water separator, transfer tank and the double-effect concentration ware that the normal pressure conversion set up, its characterized in that: the secondary steam output end at the top of the infiltration tank is communicated with the secondary steam input end of the condenser, the output end of the condenser is communicated with the oil-water separator, and the return end of the oil-water separator is connected with the top of the infiltration tank; the vacuum output end at the top of the infiltration tank is communicated with a vacuum pump, the bottom of the infiltration tank is provided with a feeder, and the bottom of the feeder is connected with the feed inlet of the extraction device; the liquid outlet of the extraction device is connected with the transfer tank; the output end of the transfer tank is communicated with the liquid inlet end of the double-effect concentrator through a guide pipe; solvent reflux end and the negative pressure backwash pump of double-effect concentrator link to each other, the output of negative pressure backwash pump respectively with the feed liquor mouth of pipe of solvent jar with extraction element's solvent feed inlet links to each other.

2. The low-temperature continuous extraction and concentration production unit device according to claim 1, characterized in that: the extraction device comprises a transmission device and a main box body, and a spiral extraction device is arranged in the main box body; the spiral extraction device comprises two spiral propelling paddles, and each spiral propelling paddle consists of a spiral shaft and a hollow blade; the two spiral shafts are arranged in parallel and are parallel to the main box body; each screw shaft is provided with blades, and the two groups of blades are arranged in a mirror image crossed manner.

3. The low-temperature continuous extraction and concentration production unit device according to claim 2, characterized in that: a solvent inlet distributor is arranged at the top of the main box body; one end of the main box body is provided with a liquid outlet box, the other end of the main box body is provided with a slag outlet box, and one end of the main box body, which is close to the slag outlet box, is provided with a solvent feed port; the heating jacket is arranged in the outer wall of the main box body, and the lifting device is arranged at the bottom of the main box body.

4. The low-temperature continuous extraction and concentration production unit device according to claim 3, wherein: the bottom of the feeder is connected with the feed inlet of the extraction device through a flexible hose; the slag discharging box is connected with the slag squeezing machine through a flexible hose.

5. The low-temperature continuous extraction and concentration production unit device according to claim 4, wherein: the liquid discharge end of the slag squeezing machine is communicated with the liquid inlet end of the transfer tank through a guide pipe, and the liquid outlet of the extraction device is communicated with the liquid inlet end of the transfer tank through a guide pipe.

6. The low-temperature continuous extraction and concentration production unit device according to claim 1, characterized in that: the double-effect concentrator is formed by combining single-effect concentrating equipment and combined concentrating equipment; the single-effect concentration equipment comprises a separation chamber and an external circulation heater; the combined concentration equipment comprises a spherical concentrator and an external circulation heater, wherein the lower part of the spherical concentrator is provided with a heating chamber, and the upper part of the spherical concentrator is provided with an evaporation chamber; the liquid outlet pipeline of the separation chamber is communicated with a liquid inlet pipeline of the combined concentration equipment; the liquid outlet pipeline of the external circulation heater of the combined concentration equipment is connected with the liquid inlet pipeline of the evaporation chamber; the evaporation chamber and the separation chamber are both connected with the transfer tank through a main communicating pipe.

7. The low-temperature continuous extraction and concentration production unit device according to claim 6, wherein: the evaporation chamber is connected to the main communicating pipe through a first air duct; an external circulation heater in the combined concentration equipment is connected to the main communicating pipe through a second gas-guide pipe; the separation chamber is connected to the main communicating pipe through a third air duct; secondary steam valves are arranged on the second air duct, the first air duct and the main communicating pipe between the second air duct and the first air duct; and a gas-liquid separator is also arranged on the main communicating pipe between the second air duct and the first air duct.

8. The low-temperature continuous extraction and concentration production unit device according to claim 1, characterized in that: the bottom output end of the solvent tank is respectively communicated with the solvent feed inlet of the extraction device and the liquid inlet ends of the two groups of infiltration tanks; a liquid discharge end at the bottom of the solvent tank is provided with a flowmeter; the air inlet end of the solvent tank is communicated with an air compressor, and a pressure protection device is installed on the solvent tank.

9. The low-temperature continuous extraction and concentration production unit device according to claim 1, characterized in that: a vacuum adjusting valve is arranged above the infiltration tank and used for adjusting the vacuum degree and controlling the temperature; and a heating jacket is arranged on the outer side of the body of the infiltration tank.

10. A low-temperature continuous extraction and concentration production method is characterized in that the production unit device of any one of claims 1 to 9 is used for completing the following steps:

the method comprises the following steps: quantitative weighing of materials: weighing the raw materials according to the extracted weight, placing the raw materials, and weighing a plurality of parts for later use;

step two: delivering the material in an infiltration tank, manually delivering or automatically delivering by a conveyer belt;

step three: soaking the raw materials, namely, after the raw materials are put into the two groups of soaking tanks, pumping the soaking tanks to a vacuum environment (the vacuum degree required by the process) through a vacuum pump, keeping the materials in the vacuum environment for a period of time (the time required by the process), introducing quantitative hot water required for extraction into the soaking tanks, introducing a heat source into a heating jacket, and soaking and heating for a period of time according to the process requirement;

step four: adjusting the angle, adjusting the angle of the main box body of the extraction device by adjusting the height of the lifting device, meeting the process requirement of the material soaking amount, and adjusting the stirring revolution to be matched with the feeding speed of the feeder;

step five: starting the feeder to continuously convey materials to the extraction device, sequentially and alternately conveying heated and infiltrated feed liquid to the extraction device through the two groups of infiltration tanks, extracting the input feed liquid through the extraction device, and quantitatively conveying a solvent to the extraction device through the solvent tank;

step six: liquid-slag separation and treatment: extracting to obtain extractive solution, transferring into a transfer tank, conveying the residue to a residue squeezing machine, squeezing, and distributing solvent in the soaking tank and the extraction device via a solvent tank at a certain ratio;

step seven: concentrating the extracting solution, wherein the transfer tank conveys the extracted liquid medicine to a double-effect concentrator for continuous concentration to obtain liquid or paste, and if the paste is continuously obtained, the extracting solution is conveyed to the double-effect concentrator through a main communicating pipe for concentration; after the double-effect concentration is carried out for a certain time, the conversion of producing extractum with large specific gravity by single-effect concentration or combined concentration can be carried out according to the concentration specific gravity requirement; when the process specific gravity is below 1.2, the production requirement can be met in each effect of double-effect concentration, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement; when the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement; when the continuous production is realized, double effects can be adopted to be converted into a single-effect concentration device and a combined concentration device for concentration respectively, and the single-effect concentration device meets the requirements of extraction and concentration hot reflux production; a combined concentration device is used for producing extractum with large specific gravity; when the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a secondary steam valve;

step eight: the solvent is recovered and thermally refluxed, the solvent is continuously evaporated, condensed and refluxed along with concentration to be timely supplemented and extracted, when the recovery temperature of the solvent tank is controlled to be about 80 ℃, the negative pressure reflux pump is used for regulating and controlling related valves (the solvent tank can be used for refluxing, or the negative pressure reflux pump can be used for directly refluxing and extracting) to continuously reflux and extract, so that the total thermal reflux production is realized, and the production process requirements are met.

Technical Field

The invention relates to the technical field of production equipment, can be used for extraction in the production processes of processed foods, health-care products, botanical drugs, traditional Chinese medicines and the like, and particularly relates to a low-temperature continuous extraction and concentration production unit device and a method.

Background

In the production process of traditional Chinese medicines, botanical medicines, foods, health products and the like, extraction is a key process of production. At present, the domestic usually adopts an intermittent extraction production mode, so that the market mainly takes intermittent extraction equipment as the leading factor at present.

With the development of the market in the 21 st century, the existing production equipment has changed greatly, and improvements are mainly made on the aspects of energy conservation, consumption reduction and production efficiency. Meanwhile, some traditional intermittent production modes are changed in the traditional and modern production processes. Because of the fierce market competition, the importance of one-time investment and production running cost is gradually considered in the production link, and a continuous production mode is gradually accepted from the viewpoint of energy conservation and production running cost reduction to meet the continuously expanded demand of production (because the production process is difficult to change, the traditional production is difficult to accept, and the application in the fields of food, health care products, single medicines and the like is more at present).

At present, domestic continuous extraction production equipment is mostly in a multi-stage horizontal continuous stirring mode, the extraction equipment occupies larger space, has longer operation time, lower extraction efficiency and higher one-time investment and operation cost, and the low-temperature continuous extraction concentration production unit device is provided to overcome the defects so as to change the current production situation.

Disclosure of Invention

The invention provides a low-temperature continuous extraction and concentration production unit device and a low-temperature continuous extraction and concentration production method, which are convenient for adjusting the extraction angle and the spiral propulsion extraction speed, improve the production efficiency, reduce the production cost and realize continuous extraction, continuous concentration and continuous liquid discharge.

The invention comprises the following technical scheme: a low-temperature continuous extraction and concentration production unit device comprises an extraction device, a solvent tank, two groups of infiltration tanks with negative pressure and normal pressure conversion, a condenser, an oil-water separator, a transfer tank and a double-effect concentrator, wherein the secondary steam output end at the top of the infiltration tank is communicated with the secondary steam input end of the condenser, the output end of the condenser is communicated with the oil-water separator, and the return end of the oil-water separator is connected with the top of the infiltration tank; the vacuum output end at the top of the infiltration tank is communicated with a vacuum pump, the bottom of the infiltration tank is provided with a feeder, and the bottom of the feeder is connected with the feed inlet of the extraction device; the liquid outlet of the extraction device is connected with the transfer tank; the output end of the transfer tank is communicated with the liquid inlet end of the double-effect concentrator through a guide pipe; solvent reflux end and the negative pressure backwash pump of double-effect concentrator link to each other, the output of negative pressure backwash pump respectively with the feed liquor mouth of pipe of solvent jar with extraction element's solvent feed inlet links to each other.

Can be convenient for through the vacuum pump with two sets of infiltration jars take out to the vacuum, for the medicinal material in the infiltration jar provides the vacuum environment, be convenient for effectively extract the material. Through the alternate switching action between two sets of concentration evaporators in the double-effect concentrator, continuous single-effect and combined concentration action can be realized, continuous double-effect and single-effect concentration conversion action can be realized to meet the continuous production requirements of different specific gravity processes, continuous concentration, continuous liquid outlet and paste outlet are realized through double-effect and single-effect interconversion, and the production efficiency is improved.

The extraction device comprises a transmission device and a main box body, and a spiral extraction device is arranged in the main box body; the spiral extraction device comprises two spiral propelling paddles, and each spiral propelling paddle consists of a spiral shaft and a hollow blade; the two spiral shafts are arranged in parallel and are parallel to the main box body; each screw shaft is provided with blades, and the two groups of blades are arranged in a mirror image crossed manner. Two groups of spiral propeller mirrors are mutually crossed and stirred, so that the extraction efficiency is improved, the extraction time is shortened, and the production and operation cost is reduced. Compared with the traditional multistage horizontal continuous stirring device, the device occupies smaller space, saves space resources, reduces the investment of disposable equipment cost, and is more worthy of popularization and use. The paddle structure of fretwork makes dredging that the menstruum can be better, and the menstruum of being convenient for carries out countercurrent interaction with the material, can more effectively extract, has improved extraction rate.

An arc-shaped cavity is formed in the main box body; the section of the arc-shaped cavity is composed of two intersected circles with the radius of r, the distance between the centers of the two circles is √ 2r, and a spiral shaft is arranged at the center of the circle, wherein r is greater than 0. The section design of the arc-shaped cavity is convenient for the spiral propelling paddle to work, and the materials are stirred by the spiral propelling paddle in the arc-shaped cavity and are fully mixed with the solvent.

A solvent inlet distributor is arranged at the top of the main box body; one end of the main box body is provided with a liquid outlet box, the other end of the main box body is provided with a slag outlet box, and one end of the main box body, which is close to the slag outlet box, is provided with a solvent feed port; a heating jacket is arranged in the outer wall of the main box body; and a lifting device is arranged at the bottom of the main box body. The solvent flows reversely with the material in the box body of the extraction device, and the material is reversely pushed forward with the solvent under the action of the spiral pushing, so that the solvent can be more fully contacted with the material to accelerate the precipitation of the solute, and the extraction effect is improved. The extraction material and the liquid menstruum are heated by the heating jacket, so that the material is thermally precipitated at low temperature, and the extraction efficiency can be improved. And a lifting device is arranged at the bottom of the main box body. The angle of the box body of the extraction device is adjusted through the lifting device, so that the soaking amount of the materials is adjusted, more materials can be soaked by using less solvents conveniently, and the rapid extraction is facilitated. The angle of the box body of the extraction device is adjusted through the lifting device, so that the soaking amount of the materials is adjusted, more materials can be soaked by using less solvents conveniently, and the rapid extraction is facilitated.

The bottom of the feeder is connected with the feed inlet of the extraction device through a flexible hose; the slag discharging box is connected with the slag squeezing machine through a flexible hose. By adopting the telescopic hose, the influence on the connection between upstream and downstream equipment caused by angle adjustment can be reduced when the angle of the extracting device is adjusted.

The liquid discharge end of the slag squeezing machine is communicated with the liquid inlet end of the transfer tank through a guide pipe, and the liquid outlet of the extraction device is communicated with the liquid inlet end of the transfer tank through a guide pipe.

The double-effect concentrator is formed by combining single-effect concentrating equipment and combined concentrating equipment; the single-effect concentration equipment comprises a separation chamber and an external circulation heater; the combined concentration equipment comprises a spherical concentrator and an external circulation heater, wherein the lower part of the spherical concentrator is provided with a heating chamber, and the upper part of the spherical concentrator is provided with an evaporation chamber; the liquid outlet pipeline of the separation chamber is communicated with a liquid inlet pipeline of the combined concentration equipment; the liquid outlet pipeline of the external circulation heater of the combined concentration equipment is connected with the liquid inlet pipeline of the evaporation chamber; the evaporation chamber and the separation chamber are both connected with the transfer tank through a main communicating pipe.

The evaporation chamber is connected to the main communicating pipe through a first air duct; an external circulation heater in the combined concentration equipment is connected to the main communicating pipe through a second gas-guide pipe; the separation chamber is connected to the main communicating pipe through a third air duct; secondary steam valves are arranged on the second air duct, the first air duct and the main communicating pipe between the second air duct and the first air duct; and a gas-liquid separator is also arranged on the main communicating pipe between the second air duct and the first air duct.

The transfer tank conveys the extracted liquid medicine to the double-effect concentrator for continuously concentrating liquid or paste, and if the liquid medicine is continuously discharged, the extracting solution is conveyed to the double-effect concentrator through the main communicating pipeline for concentration; after the double-effect concentration is carried out for a certain time, the conversion of producing the extractum with large specific gravity by single-effect concentration or combined concentration is selected according to the concentration specific gravity requirement. When the process specific gravity is below 1.2, the double-effect concentration can meet the production requirement in each effect, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement. When the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement.

When the continuous production is realized, a double-effect concentrator can be adopted to be converted into a single-effect concentrating device and a combined concentrating device for concentration respectively, and the single-effect concentrating device meets the requirements of extraction and concentration hot reflux production; one combined concentration equipment is used for producing the extractum with large specific gravity. When the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a secondary steam valve.

The bottom output end of the solvent tank is respectively communicated with the solvent feed inlet of the extraction device and the feed ends of the two groups of infiltration tanks; a liquid discharge end at the bottom of the solvent tank is provided with a flowmeter; the air inlet end of the solvent tank is communicated with an air compressor, and a pressure protection device is installed on the solvent tank. The flow meter can be used for conveniently adjusting and controlling the input quantity of the solvent, and the hot solvent can be provided for the extraction device or the infiltration tank according to the process requirement and the proportioning flow; compressed air is delivered into the solvent tank through an air compressor to increase the pressure in the solvent tank, so that the solvent is conveniently discharged according to a set proportion, and the discharge speed of the solvent can be adjusted; the constant production pressure is adjusted through the pressure protection device, and the flow of the flowmeter is adjusted through regulating and controlling the pressure to meet the process requirement.

And a vacuum regulating valve is arranged above the infiltration tank. The vacuum degree in the infiltration tank can be conveniently adjusted and the temperature in the tank can be controlled according to the requirements of the production process by the vacuum adjusting valve.

And a heating jacket is arranged on the outer side of the body of the infiltration tank. The heating jacket can rapidly heat the material in the infiltration tank.

A low-temperature continuous extraction and concentration production method uses the production unit device to complete the following steps:

the method comprises the following steps: quantitative weighing of materials: weighing the raw materials according to the extracted weight, placing the raw materials, and weighing a plurality of parts for later use;

step two: delivering the material in an infiltration tank, manually delivering or automatically delivering by a conveyer belt;

step three: soaking the raw materials, namely, after the raw materials are put into the two groups of soaking tanks, pumping the soaking tanks to a vacuum environment (the vacuum degree required by the process) through a vacuum pump, keeping the materials in the vacuum environment for a period of time (the time required by the process), introducing quantitative hot water required for extraction into the soaking tanks, introducing a heat source into a heating jacket, and soaking and heating for a period of time according to the process requirement;

step four: adjusting the angle, adjusting the angle of the main box body of the extraction device by adjusting the height of the lifting device, meeting the process requirement of the material soaking amount, and adjusting the stirring revolution to be matched with the feeding speed of the feeder;

step five: starting the feeder to continuously convey materials to the extraction device, sequentially and alternately conveying heated and infiltrated feed liquid to the extraction device through the two groups of infiltration tanks, extracting the input feed liquid through the extraction device, and quantitatively conveying a solvent to the extraction device through the solvent tank;

step six: liquid-slag separation and treatment: extracting to obtain extractive solution, transferring into a transfer tank, conveying the residue to a residue squeezing machine, squeezing, and distributing solvent in the soaking tank and the extraction device via a solvent tank at a certain ratio;

step seven: concentrating the extracting solution, wherein the transfer tank conveys the extracted liquid medicine to a double-effect concentrator for continuous concentration to obtain liquid or paste, and if the paste is continuously obtained, the extracting solution is conveyed to the double-effect concentrator through a main communicating pipe for concentration; after the double-effect concentration is carried out for a certain time, the conversion of producing the extractum with large specific gravity by single-effect concentration or combined concentration can be carried out according to the concentration specific gravity requirement. When the process specific gravity is below 1.2, the double-effect concentration can meet the production requirement in each effect, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement. When the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement. When the continuous production is realized, double effects can be adopted to be converted into a single-effect concentration device and a combined concentration device for concentration respectively, and the single-effect concentration device meets the requirements of extraction and concentration hot reflux production; a combined concentration device is used for producing extractum with large specific gravity; when the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a secondary steam valve;

step eight: the solvent is recovered and thermally refluxed, the solvent is continuously evaporated, condensed and refluxed along with concentration to be timely supplemented and extracted, when the recovery temperature of the solvent tank is controlled to be about 80 ℃, the negative pressure reflux pump is used for regulating and controlling related valves (the solvent tank can be used for refluxing, or the negative pressure reflux pump can be used for directly refluxing and extracting) to continuously reflux and extract, so that the total thermal reflux production is realized, and the production process requirements are met.

The invention has the advantages and positive effects that the structural design is simple and reasonable:

1. the technical scheme provided by the invention can realize an intermittent production mode, and can also meet the process requirement of accelerating the rapid precipitation of different materials by mutually converting and infiltrating the two infiltrating tanks, thereby realizing a continuous production mode and improving the production efficiency.

2. The invention adopts the soaking tank to overcome the defect that special materials are difficult to extract, different materials can not be completely extracted in a short time when being extracted by the extracting device or because the characteristics of the materials are different, and the soaking tank is adopted to carry out pretreatment in advance, so that the extraction efficiency is improved.

3. The invention can realize continuous single-effect and combined concentration action by the alternate switching action between two groups of concentration equipment in the double-effect concentrator, can realize continuous double-effect and single-effect concentration conversion action to meet the production requirements of different specific gravity processes, and realizes continuous concentration, continuous liquid outlet and paste outlet by the mutual conversion of double-effect and single-effect, thereby improving the production efficiency.

4. The invention can realize the recycling of the solvent liquid, the solvent in the infiltration tank and the double-effect concentrator can be directly conveyed to the extraction device for use, the preheating effect on the solvent is reduced, the energy consumption is further reduced, and the temperature of the recovered solvent is about 80 ℃, so that the preheating is not needed.

5. The invention heats the extraction material and the liquid menstruum through the heating jacket, so that the material is thermally precipitated at low temperature (without damaging heat-sensitive substances), and the extraction efficiency can be further improved.

6. According to the invention, the two groups of infiltration tanks are vacuumized by the vacuum pump, so that a vacuum environment is provided for the medicinal materials in the infiltration tanks to destroy the molecular structures in the medicinal materials, and further the medicinal materials are rapidly infiltrated with a thermal solvent, and the materials are conveniently and effectively extracted.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic front view of the extraction device.

Fig. 3 is a schematic sectional structure of the main box of the extraction device.

FIG. 4 is a schematic view of the top surface of the main body of the extracting apparatus.

Fig. 5 is a schematic view of the main box section B-B of the extraction device.

Fig. 6 is a schematic view of the paddle structure of the extraction device.

Fig. 7 is a schematic view of the transmission of the extraction device.

In the figure, 1-support seat; 2-a hinged seat;

3-a transmission device, 31-a driving variable frequency speed regulating motor, 32-a speed reducer, 33-a gear box, 34-a driving gear, 35-a driven gear and 36-a supporting plate;

4-main box, 41-arc cavity, 43-liquid inlet distributor, 44-solvent liquid inlet pipe, 45-heating jacket, 46-solvent inlet;

5-a slag discharging box; 6-liquid outlet box and 61-liquid outlet;

7-a spiral extraction device, 71-a spiral shaft, 72-a paddle and 73-a connecting rod; 8-a lifting device;

9-extraction device, 90-extracting solution storage tank, 91-condenser, 92-oil-water separator, 93-solvent tank, 94-slag squeezing machine, 95-infiltration tank, 96-vacuum pump, 97-feeder, 98-transfer tank, 99-double effect concentrator; 991-main communicating pipe, 9911-secondary steam valve A, 9912-secondary steam valve B, 9913-secondary steam valve C, 9914-gas-liquid separator, 992-single-effect concentration equipment, 993-combined concentration equipment, 994-external circulation heater A, 995-external circulation heater B, 996-negative pressure reflux pump, 997-separation chamber and 998-spherical concentrator.

Detailed Description

To further clarify the disclosure of the present invention, its features and advantages, reference is made to the following examples taken in conjunction with the accompanying drawings.